| ⇢ | A | HtmlHeadingNormalizer::cloneHeading() added | |
| ⇢ | A | HtmlHeadingNormalizer::containsHeadings() added | |
| ⇢ | A | HtmlHeadingNormalizer::levelToTagName() added | |
| ⇢ | A | HtmlHeadingNormalizer::tagNameToLevel() added | |
| A | ↛ | HtmlHeadingNormalizer::cloneDomElementWithNewTagNa... removed | |
| A | ↛ | HtmlHeadingNormalizer::htmlContainsHeadings() removed | |
| A | ↛ | HtmlHeadingNormalizer::numberToHeadingLevel() removed | |
| A | ↛ | HtmlHeadingNormalizer::headingTagNameToNumber() removed |